Nick Diaz

Nick Diaz makes the list, not because he lacks any sort of talent, but because of his continued exhibitions of mental immaturity.

Diaz has had a lengthy career consisting of 34 professional fights, which began in 2001. He is a former Strikeforce champion, and UFC veteran. In spite of such impressive accolades, Diaz could justifiably be considered a disappointment.

If he sticks to his guns and retires as he claimed he intended to do in the aftermath of his decision loss to Carlos Condit on February 4, Diaz will be exiting the sport at the peak of his talent and notoriety. Before facing Condit, Diaz was on an 11-fight win streak, and was considered a top 5 welterweight by many fans and analysts.

The road to immortality is a very long and arduous one, but it seems the other side of the hill is much steeper.

If Diaz is indeed finished with MMA, he leaves behind a legacy of unfulfilled promise, failed drug tests and one of the most sudden exoduses that MMA has ever seen by a popular fighter.

If, however, Diaz serves his drug suspension and gets back into the cage to fight once again, he will receive a full pardon from the disappointment label.

Let's hope the latter scenario plays out. http://www.fighterwarehouse.com/?Click=26513